Improvement in ratchet-wrenchess



sectional plan of the ratchet.

STATES 'ATENTIFFFC THOMAS CLEMENT HAMMOND, VOF SGRAhIEll'JiO,CALIFORNIA;l

IMPROVEMENT 1N RATCHETL-WRENCHES Specification forming part of Letters Patent No. 207,1] 7, dated August 20, 1878; application filed Y March 23,1878.

Total! whom it nza- 2] concern: y f Be it known that I, THOMAS CLEMENT HAMMOND, of the city of Sacra1nento,vState o'tCalitornia-liavc invented a new and useful Improvement in YRatchet-lVrenches, of which the following is a speciiica-tion:

The invention relates to that .class of Wrenches used forbolts and nuts 5 and con sists of a combination of a set of sockets graduated to iit dii'erept forms and sizes of bolts and nuts, with a ratchetwrenclrarran ged setas to be readily adjusted to and. work saidsockets. e

Referring.tothe aceonlpanyings drawings, Figure l is an isoinetrieal view ot' the ratchetwreneh and a socket combined. Fig. 2 is a Fig. 3 is a sectional ele at-ion. of thev socket. tional detail of the ratchet. Y

(Fig. l shows the socket B inserted in the ratchet-lever Il R, so that when the socket .B isplaced over a nut or the head of a bolt, a rotary motion can beixnparted t0 saidv nut or bolt `without taking the 'socket B oit'.

Fig. 2 shows a sectional plan, presenting the ratchet R and square hole O, into which the shank of thesoeket (sce Fig. 3) is inserted. 'u is the notch into whichthe spring-catch S lies for the purpose ot' holding the socketv B in the ratchet l. l) is the pawl, that is fixed in the handle H in such a manner that it oscillat'es freely in its circular socket, and is kept inl its place by the opposite wall ofthe recess in the handle Il' fitting against the oscillating end of 1hepawl. lvl is a spiral springlaid in a recess in theihandle Il,'\\'hiehfprcsscs against the pawl i, `forcing it into the tintes `ot' the ratchet It@ 'liig-Sislimvs a sectional elevation et' one of the sockets, composed of the box b, used to fit over the heads oi' bolts or nuts, the square shank N, which goes inv the ratchet at ()the inside of said shank heilig' cored in a cylindrical form for the purpose 0f admitting the ends ot' bolts that extend through the nuts over Fig. is a see-r acted upon.

which b is placed. At the upper end of shank N is cored a square recess, b', for the purpose of'tittihg over anothelb orismalle'r size of ,nut or screw. S is a spring that lies in thepnotch u of the ratehetR and snaps out onthe opposite side, so as to hold the ratehetR and theY socket Btogether. v v

Figa is a sectional View, showing the dctails'of the handle' H andratehet R, vprovided with a `tiange, "r, atthe bottom, anda hb or lug at the top, the same being made either round orV other form, so that afterl the `handle .H is laced on the ratchet E the disk m is to be paced over 'and around'the said.

lug; and as the lug is long enough to extend through the plate m it can be riveted'over on the plate or provided with points which can be riveted over on m, holding it firmly in its place,

and seeurip gthe handle H=between the anges on and i', the object of this form ot construe tion bein g to forni a ratchet that will be cheap,

strong, and durable, and can be constructed of castings without undergoing any considerable amount et' finishing; and as the ratchetwrench is readily detached or adjusted to thesoeketB, therefore it is plainlthat the ratchet can be taken ott' and plaeedoniagani with the reverse side down, so that either right or' left motion can be imparted to thesceket't'or either screwing von or ott' a boltor uut, and admitv ting of various sizes of spckets being'inserted in the same ratchet It to suitjthe artlcle to be r W hat I` claim as my inxentiolrxs-` The eoinbinationof the interchangeable dem bl e-en ded socket B, provided with sprin g-catch S, with the ratchet-wrench composed of handle I, 

